fix label selection on trunctated category lists

[bkmartinjr]

Fixes #1556

Category label select/deselect was not working correctly on any category with a truncated list of labels (ie, where we display a subset of labels). This resolves the issue.

[codecov-commenter]

Codecov Report

Merging #1646 into main will increase coverage by 5.82%.
The diff coverage is 60.00%.

@@            Coverage Diff             @@
##             main    #1646      +/-   ##
==========================================
+ Coverage   62.18%   68.01%   +5.82%     
==========================================
  Files          36      115      +79     
  Lines        3721    10058    +6337     
  Branches        0      458     +458     
==========================================
+ Hits         2314     6841    +4527     
- Misses       1407     3157    +1750     
- Partials        0       60      +60     

Flag	Coverage Δ
#frontend	71.43% <60.00%> (-28.57%)	⬇️
#javascript	71.43% <60.00%> (-28.57%)	⬇️
#smokeTest	?
#smokeTestAnnotations	?
#unitTest	71.43% <60.00%> (?)

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Impacted Files	Coverage Δ
client/src/util/stateManager/controlsHelpers.js	42.22% <60.00%> (ø)
server/data_common/rwlock.py	88.23% <0.00%> (ø)
server/common/app_config.py	73.24% <0.00%> (ø)
client/src/util/clip.js	77.77% <0.00%> (ø)
client/src/util/dataframe/dataframe.js	92.50% <0.00%> (ø)
server/data_anndata/anndata_adaptor.py	79.80% <0.00%> (ø)
server/data_common/fbs/NetEncoding/Column.py	77.77% <0.00%> (ø)
client/src/annoMatrix/crossfilter.js	97.97% <0.00%> (ø)
client/src/util/quantile.js	100.00% <0.00%> (ø)
...er/data_common/fbs/NetEncoding/JSONEncodedArray.py	53.33% <0.00%> (ø)
... and 70 more

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